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Using ubuntu 12.10 and have putty installed, I am using ssh /putty to connect an AIX system once I do that I export the display and run something simple like 'xclock' or 'xterm'

Problem is its not working, I get the following 'Error: Can't open display:'

I have checked on the server side and on my laptop to make sure X11forwarding is enabled and it is within putty,

ssh_config (local) : ForwardX11 yes
                     ForwardX11Trusted yes

sshd_config (AIX Server) : X11Forwarding yes

I have tried connecting through Putty,and from the CLI

ssh -X user@<Aix_Server>

But no matter what I try I get the : Error: Can't open display: message This was working for me, but not since I have migrated to 12.10

Anyone out there come across this before have any suggestions?


The below is from AIX after I login using Putty:

 echo $DISPLAY
 xclock Error: Can't open display: $
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Ok the below is from AIX after I login using Putty. $ echo $DISPLAY $ xclock Error: Can't open display: $ – user138219 Mar 6 '13 at 23:23

Ok it seems that the following has resolved the issue.

After looking at this for the last while it appears that the xauth location changed from AIX 5 , so it wasn't able to find it.

So when using sudo after that, I used the following :

sudo DISPLAY=localhost:0.0 XAUTHORITY=/home/{home_dir}/.Xauthority {command_here}

Worked and I was able to launch and get done / installed what I needed.

Thanks to @zwets your help was great, sometimes after looking at something for too long you need some fresh input.

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How about ssh -Y user@server?

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Yeah tried both options ssh -Y and ssh -X but te same with both options. – D1979 Mar 6 '13 at 20:33
@D1979 You say "I export the display". Using ssh -X, -x or -Y you shouldn't do that as the X11 output gets tunneled. Ssh will set it for you. What is the value of DISPLAY right after you login? What does echo $DISPLAY show? – zwets Mar 6 '13 at 20:53
And to isolate that this is not a client-end issue, does DISPLAY get set when you ssh -Y localhost on the Ubuntu end? (Note: you are ssh-ing from a terminal window in the X environment, right? I once made the mistake to try and diagnose this from VT1.) – zwets Mar 7 '13 at 7:32
ssh -Y localhost when I try this I get the following : ssh: connect to host localhost port 22: Connection refused I guess this is because I have not got openssh-server server installed. On my laptop I am using the ssh-agent to connect to the server. – D1979 Mar 7 '13 at 9:18
OK, I assumed you had an ssh server running on your laptop. Everything seems in place (in fact, having X11Forwarding yes on the remote end normally suffices; the client options ForwardX11* are redundant with -X/-Y). Final check: do you have xauth? – zwets Mar 7 '13 at 10:35

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